From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve simple percent problems in basic arithmetic.

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(1) Part 1 of 3 - How to Solve a problem that asks you to identify percent, amount and base, (2) Part 2 of 3 - How to Solve a problem that asks you to identify percent, amount and base, (3) Part 3 of 3 - How to Solve a problem that asks you to identify percent, amount and base